Oil-well pump



WITNESS: g E

19-29- I v I F. M KISSICK 1,733,896 OIL WELL PUMP Filed June 16 1928 Zi I "4,

ATTRNEY Fjg aa Patented Oct. 29, 1929 UNETE' T FRANK MGKISSICK, 'IUPMAN, CALIFORNIA OIL-WELL PUMP Application filed June 16,

My present invention has reference to deep oil well pumping and my obj sets are the pro vision of an oil well pump that will obviate the pulling of the tubing and overcome the time and labor thus required; which will prevent the settling of sand around the standing valve and plunger; which is constructed of sections that may be readily separated when it is necessary to change or renew parts;

which will take care of and prevent the sticking of the plunger incident to expansion by heated oil in deep wells and which, as a whole, will present an easy working, strong, longlived and thoroughly effective device for its purpose.

To the attainment of the foregoing, the invention consists in the improvements as hereinafter described and definitely claimed.

In the drawings:

Figure 1 is an elevation with parts in section, of the upper portion of my improvement.

Figure 2 is a similar view of the lower p0rtion of the improvement.

ment.

Figures 4, 5 and 6 are transverse sectional views on the respective lines 4t, 5--5' and 66, of Figure 1.

Figure 7 is a similar sectional view approximately on the line 7 7 of Figure 2.

Because of the length of the improvement I have found it necessary in the proper illustration thereof to show the same in two parts or sections which are disclosed by Figs. 1 and 2 of the drawings. The tubing of the improvement is indicated by the numeral 1. The tubing, adjacent to the top thereof, is formed with any desired number of annular grooves and in each of these grooves there is received an expansible ring 2 that contacts with the casing in which the well tubing is arranged.

By reference to the drawings it will be seen that the tubing is constructed of any desired number of sections and that the lower section which rests on the bottom of the well, is flared from its outer face toward its end. The sections are threadedly connected as is also disclosed by the several figures of the drawings. The top section of the tubing is in Figure 3 is a top plan view of the improve- 1928. Serial No. 285,969.

the nature of-a cage and is indicatedby the numeral 3. Through this cage there is passed the valve stem l, the valve for the cage 3, on the said stem being in the'nature of a disc 5, and the seat forthe valve, indicated by the numeral 6, is screwed between the cage section and the tube section adjacent thereto and this seat is formed with an annular series of openings 7. The stem t has its lower end also coupled to a valve cage 8. Both the valve 6 cages 3 and 8 comprise elongated body members whose top and' bottom portions are connected by the usual longitudinally extending ribs and in the cage 8 there is arranged a ball valve 9 that finds a seat on the upper end of the pump barrel, 11. V

.Befojre' proceeding further it should be stated that the spaced connecting ribs or arms for the cage 3 have inner notches 12 which limit the movement of the valve 5 in the direction away from its seat.

The pump barrel 11 is provided on its outer periphery with any desirednumber of annular grooves inwhich there are seated split spring expansion rings '13 that'contact with the inner facei of the cage. The lower 'valve cage for the tubing is indicated by the numeral 14. The top of this cage is provided with spaced apertures 17 In the cage there is a ball valve 18. The ball valve finds a seat on a ring member '19 that is centrally formed on its outer periphery with a flange or enlargement 20 that is engaged between the lower tube section and the tube section adjacent thereto.

Upon the upward stroke of the pump plunger 11 the ball valve 18 raises off its seat, letting the fluid, on the downward stroke seat the said valve, 18, so that fluid will flow through the seats for the valves 9 and 1 5, and from thence outward through the cage 3 of the tubing. With my improvement it will be noted that the plunger of the pump has what may be termed an expansible engagement with the tubing through the medium of the expansion rings 13 and likewise the tubing has an expansible engagement 7 with the well casing through thesplit expansible rings 2. .My improved pump willv ob-. viate the necessity of the pulling of the tubing. Because of the expansible elements associated with the improvement the sticking of the plunger incident to the expansion of p the plunger by heated oil in deep wells is effectively overcome so that the device will positively operate in an easy manner under all conditions.

The construction and advantages of improvement will, it is thought, be understood and appreciated by those skilled in the art after the foregoing description has" been carefully read in connection with the accompanying drawings. Obviously I do not wish tobe restricted to the precise details herein set forth and, therefore, hold myself entitled tomake such changes therefrom as fairly fall within the scope of what Iclaim.

Having describedv the invention, I claim:

Anhoil well pump comprising a tubing made upgvof removably connected sections, the lower section of which having its lower portion flared. inwardly to the end thereof, a lower ball valve therein, a seat for the valve, an apertured element in the tubing m above the valve, .a hollow plunger in the tubing above saidapertured element, expansiblerings carried :by' the plunger contacting with the bore of the tubing, a valve cage fiXed on the upper end of the plunger, a ball valve therein normally closing the hollow plunger, a stem fixed Jon the valve cage, a

valve cage 011 the upper end of the tubing through which the stem passes and formed with an internal annular shoulder, an aper-- tureddisc-lik'e seat for the cage, a disc valve guided on the stem and'l'imited inits'up'wa-rd movement. by said shoulder and spaced expansihle. rings on' the outer periphery of the tubing; V v g In testimony whereof I aflix my signature,

' FRANK MCKISSICK. 

